How long does it take to get use to Acuvue Oasis contacts?

I too have begin using these contacts for 5 months now(for astigmatism as well) and have the same problems...I've only had 1 month so far that was 'okay', which is weird. Perhaps they are not made very well. I am constantly blurry, and they never sit right on my eyes ever(most likely the reason for the constant blurriness). I can't wait till I use up the last pair. I refuse to buy these ever again. I am happy to know that I am not alone with these issues.